.If a =
√+√
√−√
and b =
√−√
√+√
, then find
+
=?
Answers
Answered by
3
Answer:
72
Step-by-step explanation:
a+b=17\sqrt{a} +\sqrt{b} =17
a
+
b
=17
a−b=1\sqrt{a} -\sqrt{b} =1
a
−
b
=1
∴a=9\sqrt{a} =9
a
=9 , b=8\sqrt{b} =8
b
=8
ab=ab\sqrt{a} \sqrt{b} =\sqrt{ab}
a
b
=
ab
( ∵ a>0,b>0a>0,b>0a>0,b>0 )
∴9∗8=729*8=729∗8=72
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